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<p>Water is an essential and fundamental resource for human sustainable development. Sorption-based atmospheric water harvesting (SAWH) offers promising routes to address global water scarcity without spatial or temporal limitations. Unfortunately, low water sorption–desorption kinetics are long-standing challenges when sorbent powders are densely packed at the device scale for practical utilization. Here we report a scalable and flexible mixed-matrix membrane (MMM) by confining zeolite-like EMM-8 nanosheets into macroporous thermoplastic polyurethane (TPU) networks via three-dimensional printing and in situ solvent exchange. This sorbent membrane (EMM-8@TPU) features multiscale hierarchically porous structures for ordered mass transport, achieving ultrafast water sorption–desorption. We further engineer scalable multiscenario SAWH prototypes for ultrafast water harvesting: roll-to-roll rotational MMMs achieve sunlight-driven SAWH, and layer-by-layer-assembled MMMs realize electric-driven SAWH, reaching impressive water productivity up to 13.79 g<sub>water</sub> g<sub>sorbent</sub><sup>−1 </sup>d<sup>−1</sup>. Our work represents promising routes for designing next-generation water sorbents via assembling sorbent powders into hierarchically ordered membranes.</p>

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Scalable and flexible zeolite nanosheet membranes for ultrafast water harvesting from air

  • 期刊论文

  • 发表日期：

    2026年5月14日

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  • Zhaoyuan Bai,
  • Ziteng An,
  • Han Han,
  • Dingyu Wang,
  • Jiaxing Xu,
  • Tingxian Li

摘要

Water is an essential and fundamental resource for human sustainable development. Sorption-based atmospheric water harvesting (SAWH) offers promising routes to address global water scarcity without spatial or temporal limitations. Unfortunately, low water sorption–desorption kinetics are long-standing challenges when sorbent powders are densely packed at the device scale for practical utilization. Here we report a scalable and flexible mixed-matrix membrane (MMM) by confining zeolite-like EMM-8 nanosheets into macroporous thermoplastic polyurethane (TPU) networks via three-dimensional printing and in situ solvent exchange. This sorbent membrane (EMM-8@TPU) features multiscale hierarchically porous structures for ordered mass transport, achieving ultrafast water sorption–desorption. We further engineer scalable multiscenario SAWH prototypes for ultrafast water harvesting: roll-to-roll rotational MMMs achieve sunlight-driven SAWH, and layer-by-layer-assembled MMMs realize electric-driven SAWH, reaching impressive water productivity up to 13.79 gwater gsorbent−1 d−1. Our work represents promising routes for designing next-generation water sorbents via assembling sorbent powders into hierarchically ordered membranes.